Today's Message Index:
----------------------
1. 01:27 AM - Coil Cooling Tubes (ianwilson2)
2. 07:29 AM - Re: Coil Cooling Tubes (N1BZRich@AOL.COM)
3. 07:37 AM - Coil Cooling Tubes (Beckman, Rick)
4. 07:58 AM - Re: Coil Cooling Tubes (N1BZRich@AOL.COM)
5. 08:02 AM - Coil Cooling Tubes (Beckman, Rick)
6. 08:48 AM - Re: Oil in exhaust & Exhaust Pipe Capscrews (Chuck Deiterich)
7. 10:30 AM - Re: Coil Cooling Tubes (Lynn Matteson)
Message 1
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| Subject: | Coil Cooling Tubes |
In my 2200A installation manual it says to fabricate some cooling tubes for the
ignition coils on the ram air ducts. As my plane hasn't flown yet, can anyone
with running experience tell me whether I need to do this or not? It looks
to me that the holes already in the ducts are aligned fairly well with the coils,
so they will get a fair amount of cool air.
Many thanks in advance.
Ian Wilson
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=230622#230622
Message 2
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| Subject: | Re: Coil Cooling Tubes |
Ian,
My experience based on two Jab 3300 installations is that the cooling
tubes are worth the effort. My aircraft (a highly modified Esqual) has about
530 hours in just over 3 years. It has had no ignition coil issues - it has
had the blast cooling tubes from day one. On the aircraft that our EAA
chapter built (a 601XL) that has about 200 hours in just under 2 years; it had
a
coil failure about 10 hours ago. It now has the two blast cooling tubes. My
guess is that the existing holes in the ducts are adequate for cooling the
starter but not sufficient for long life of the coils.
Blue Skies,
Buz Rich
Williamsburg, VA
**************Need a job? Find an employment agency near you.
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Message 3
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| Subject: | Coil Cooling Tubes |
Now, here's a question for you, Ian... in adding the coil
cooling tubes, do you think you have robbed the starter of its cooling
blast of air? Don't you have to use the same holes for the coil coolers
as the ones that supply the air for the starter?
Just curious... I am running a Jab 3300 also.
Rick
Ian,
My experience based on two Jab 3300 installations is that the
cooling tubes are worth the effort. My aircraft (a highly modified
Esqual) has about 530 hours in just over 3 years. It has had no
ignition coil issues - it has had the blast cooling tubes from day one.
On the aircraft that our EAA chapter built (a 601XL) that has about 200
hours in just under 2 years; it had a coil failure about 10 hours ago.
It now has the two blast cooling tubes. My guess is that the existing
holes in the ducts are adequate for cooling the starter but not
sufficient for long life of the coils.
Blue Skies,
Buz Rich
Williamsburg, VA
Message 4
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| Subject: | Re: Coil Cooling Tubes |
In a message dated 2/17/2009 10:38:20 A.M. Eastern Standard Time,
Rick.Beckman@atk.com writes:
Don't you have to use the same holes for the coil coolers as the ones that
supply the air for the starter?
Rick,
I did not use the same holes. I fabricated "blast tubes" from small pvc
pipe that blow directly on each coil. The left coil "blast tube" comes from
the back end of the left duct, has a 90 degree elbow and then blows directly
on the left coil. The right "blast tube" comes out of the right duct just
aft of the back cylinder, has a 45 degree fitting and then an extension that
takes it to the right coil. The end of this "blast tube" that is inside the
duct is cut at 45 degrees to pick up blast air from the aft end of the duct.
Hope this helps,
Blue Skies,
Buz Rich
**************Need a job? Find an employment agency near you.
(http://yellowpages.aol.com/search?query=employment_agencies&ncid=emlcntusyelp00000003)
Message 5
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| Subject: | Coil Cooling Tubes |
It does help. Thanks!
Do not archive
Message 6
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| Subject: | Re: Oil in exhaust & Exhaust Pipe Capscrews |
Larry,
I would not use any locktite on these screws. They have a star lock washer
on them.
In fact, I use antiseize on mine. I check mine every oil change. If you
ever need to
remove them, chances are the bolt will have seized to the aluminum and will
break off.
You need to be very careful of screws in aluminum especially hot locations
like the
exhaust pipes to aluminum heads. Same antiseize compound as the spark
plugs.
My opinion.
Chuck D.
> Subject: Re: JabiruEngine-List: Oil in exhaust & Exhaust Pipe Capscrews
> From: Richard Girard <aslsa.rng@gmail.com>
>
> Larry, It's my experience that 262 Locktite (red, permanent) just gets
> undone by the heat in the exhaust pipe area, 242 (blue, service removable)
> seems a bit better. For what it's worth.
> Rick
>
> On Sun, Feb 15, 2009 at 7:17 PM, lwhitlow <ldwhitlow@comcast.net> wrote:
>
>> >
>>
>> Ok So I got the EGT probes installed.
>>
>> I took off the cap screws holding the pipes on Drilled the hole for the
>> EGT and re-installed the pipe. The question is should I use Loctite on
>> the
>> the cap screws when I put them back in?
>>
>> On another note when I took of the number one pipe, I noted a amount of
>> engine oil in this pipe alone. Normal?? None of the others had any oil
>> just
>> the number one
>>
>> Thanks
>>
>> Larry
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=230431#230431
>>
>>
>
>
> --
> Checked by AVG.
> 02/15/2009 6:09 PM
>
>
Message 7
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| Subject: | Re: Coil Cooling Tubes |
Unless I'm missing something, why do you think you need to cool the
starter? It only operates for 2-3 seconds and unless something is
VERY wrong, it should not get hot during that short run.
When I first got my engine back in 2005, Ben Krotje told me they
"hardly ever" saw the need for the cooling tubes to the coils.
BUT...this was in 2005...things may have changed. I went ahead and
put the tubes in anyway, and had no coil issues for as long as I had
coils.
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062, 605 hrs
Sensenich 62x46
Electroair direct-fire ignition system
New skis done and flying
On Feb 17, 2009, at 10:37 AM, Beckman, Rick wrote:
> Now, here's a question for you, Ian in adding the coil
> cooling tubes, do you think you have robbed the starter of its
> cooling blast of air? Don't you have to use the same holes for the
> coil coolers as the ones that supply the air for the starter?
>
> Just curious I am running a Jab 3300 also.
>
> Rick
>
>
> Ian,
>
> My experience based on two Jab 3300 installations is that the
> cooling tubes are worth the effort. My aircraft (a highly modified
> Esqual) has about 530 hours in just over 3 years. It has had no
> ignition coil issues - it has had the blast cooling tubes from day
> one. On the aircraft that our EAA chapter built (a 601XL) that has
> about 200 hours in just under 2 years; it had a coil failure about
> 10 hours ago. It now has the two blast cooling tubes. My guess is
> that the existing holes in the ducts are adequate for cooling the
> starter but not sufficient for long life of the coils.
>
> Blue Skies,
>
> Buz Rich
>
> Williamsburg, VA
>
>
> href="http://www.matronics.com/Navigator?JabiruEngine-List">http://
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